Safety device for use on alpha dough rolling machine commonly known to the baking industry as alpha dough brake



May 12, 1931. J. c. BAREFoo-r 1,804,853

SAFETY DEVICE FOR USE ON A DOUGH ROLLING MACHINE COMMONLY KNOWN TO THEBAKING INDUSTRY AS A DOUGH BRAKE I Filed April 17, 1950 2 Sheets-Sheet lJsie 6'. Zamf A mi ammala,

3 5 2 n, .OMV 0Y e L. h 8N S 0 1M S M ...v www Ah Mms I 2 HH CG AU MO DmA I 0 TLS% omAl ORM. Ewwl RODl ADMM BA D. GA Cmmd Ke JmA, Y UBF; E 4 RHOT F v O ET C T N VW EO DN K Y T E F A s May 12, 1931 Patented May k12,1931 intesig STATES PATE Jr o Psion :resin c; BAnnFoor. on CHARLOTTE,NORTH le.Lirto'znfim sAFETY DEVICE non Application led April 117.,

Theobj-ect of my invention ist@ provide a novel Iand elli-cient devi-cefor use on a dough rolling machine vcommonly `known to the bakingindustry as adough bralre, which will be substantially automatic inoperation to lstop the machinewhen the'operatorfgets his hand in adangerous position and which also has novel .means forV both turning offthe electric current thatoperates the machine and also applyingthe braket-o immediately arrest movement of the heavy rollersof the machine. c

. Safety devices: heretofore 'devised fory machines of this character,have substantially failed of `their purpose for the reason that theymerely lshut off thev1 electric current from the machine but did` notinstantly arrestwthe movement of the heavy rollers, the

momentum :of which; isconsiderable, and suflicient to crush theoperatorshand. and arm before they could be stopped,l `even after the currentywas shutoff.

c It is also an obj-ect of my invention to pro videa relatively:simple-and. etlicient mechanism for accomplishing the purposes desired.v

I attain jthese Vand other Iobjects ofmy invention by the mechanismillustrated in the accompanying drawings, in whichfhu Figure l tion;

Fig. controlling mechanism, the apron 13 being broken away toy show thismechanism;

Fig. 3 is an fend elevation of the machine, a portion being broken away'and shown in section; and n .c

Fig. 4 is ya detailed perspective view of the switch controllingmechanism detached from the machine. 9 f l -Like numerals designatelikeparts in each of the several views; i f

Referring to the accompanyingdrawings.7 there is illustrated a doughrolling .machine vl having the dough rollersr2 mounted one above theother andgeared together and the usual apron 3 on which the dough isplaced before it passes through the machine.- The machine is provi-dedwith a flywheel keyed to. the shaft 5 which shaftiextends across is ayside elevation foffmy inven-r 1930. Serin No. irn-51.

the body of the machine and vis operatively l' i irs-non'. AnoUs-rinoLLING MACHINE 'colraMoNLY Known 'Dorian Britain-G rnnns'rRY AsA D'oUGH BRAKE applying lever l0 is provided with brake release lever.12 which rengages a recessed portion 23 ofthe pivoted preferably.spring `controlled latch or. -U-bar 19,., the brakere lease ylever l2.having avlimited movementin the bracket 24C., .as Will he apparentby'referi lence to Figs. 2 and t.

ably dependent from the bottom portion of the apron 3 bymeans of hinge(orhinges) 14. Iy also provide an electric switc'hf ,16

Il provide .a-depending apron v'13, 'sv-li'iigf f mounted on the fra-meof the machine'and having a sli-dahle vpushv button switch 17 with theend of whichv .member.26` contacts, as shown in Fig. 2. Thespringcontrolled U-bar 19 is pivoted at 20. :It may Shave -a suitablebrace Member 19 is lprioviidezd` with a spring 2.1 extending from pivot20' to an intermediate portion of the springh controlled U-bar 19 toltend to hold'. the 'n' f spring-controlled U-bar in the position shownin Fig. 2, in Whichposition the other arm kof the member 19 having therecessed portion 23 is in locking engagement with the brake stop arm l2.The end of inember 19 may, if desired', be provided with a roller 22 andthe portion of the U-bar 'designated 18 is curved or .sloped downward onVone side, as shown in Fig` 4;

In operation the operator places ylarrlge rolls of bread Clough on thetable 3, .of the machine and it is rolled through a number of times Vinorder to properly. prepare the y l dough forbaking. These machines asput out by the manufacturer have guards on them andv people have beenseriously injured by getting their hands and arms out in these rollers.The electric switch` which controls the' machines is either on the wallnear-by or on the machine kwithin easy reach of the operator so that hecan cut it oftn quickly in case ofan accident but the trouble has beenheretofore that the momentum of the vmachine after the power is cut offis great enough to injure the hands or arms of the operator before themachine stops. This invention overcomes this dangerous feature of themachine by providing a brake band G on the ily wheel or drum 4 whichwill function to eflectually and quickly stop the operation of the heavyrollers of the machine. The brake band is attached to the pivoted brakeapplying arm 10, which arm is provided with an adjustable weight 11 onits outer end and is integral with or affixed to the brake release lever12, which is normally held in inoperative position by the notched end 23of the pivoted latch or U-bar 19 which is releasably held in engagementwith the brake release lever 12 by the spring 21.

y When the operator moves his hand too far toward the dough rollers hewill automatically bend his knees and they will strike against thedepending apron 1S and press same toward the machine.

When apron 13 is pushed forward the latch or U-bar 19 is swung pivotallyover'so that its notched end 23 will move out of engagement with thebrake release lever 12, whereupon the weight 11 on brake applying arm 10will cause those members to swing forwardly and thus apply the brakeband 6 to the fly wheel-or drum 4, which will immediately arrest therotation of the rollers l2. At the same timethe member 26 on U-bar 19will press against the electric switch 17 cutting off the electriccurrent which operates the rollers ofthe dough brake.

When members 26 and 17 are engaged it is impossible to switch current onuntil brake lever 12 isl pulled back into slot 23. This rovidesanothersafety device. V'The brake v ever 12 presses against bar 19 andholds it against the push-button 17. Vvlhen the lever l2 is in recess 23the spring 21 holds the U bar stud 26 oft1 the push-button, but when thelever is pulled out of notch23 it pushes against the side of the U bar19 and holds it in contact with the push-button so that the push-buttoncannot be operated until the lever is pulled back in notch 23.

When the machine has been cutoff the stud or button 26 on U-bar 19 ispressed tightly against the electric push button 17 and is held in thisposition until the brake lever 12 is pulled, aftery which the operator lcan cut on the current and start the machine again. This prevents anyonefrom starting the machine until the safety device is set ready forimmediate action in case of accident. The machine cannot'be starteduntil the Safety device is first put in proper position.

The roller 22 is provided on the downwardly slopingend 18 of Ubar 19 sothat it will work easily when it comes in contact with the hinge 14attached to apron 13 and Y which operates the cut-0E.

What I claim is:

1. In a safety device for a dough rolling machine having a ily wheel, abrake band arranged -to be thrown into frictional engagement with adrum, a dependent apron hingedly connected to the machine, andmechanismoperatively connecting the apron with the brake band toV applysame to the drum when the apron is operated.V

2. In a safey device for a dough rolling machine, the combination with adough rolling machine having a flying wheel, of a brake band adapted tobe thrown into frictional engavement with the fly wheel, a weightedv brae-applying lever to which said brake band is attached, an apron hingedlyconnected to the machine and disposed in front of the operator, andmechanical means operatively connecting the apron with thebrake-applying lever to cause-the frictional engagement of the brakeband on the ily wheel to arrest the operation of Y the machine.

8. In combination with the mechanism delined in claim 2, an electricalswitch, and a switch actuating member arranged to simultaneously operatesaid switch and the aforesaid brake-applying mechanism. l

4. In ak safety device of the type described, the combination with adough rolling machine having a fly wheel, of a brake band adapted tofrictionally engage said fly' wheel, an adjustable weighted lever towhich said brake band is attached, a brake releasing arm afliXed to saidbrake-applying lever, a latch member engaging the brake krelease arm, aswingable apron arranged to actuate the latch member, and an electricswitch arranged to be actuated by the aforesaid apron to turn off thesource of current supply that operates the machine simultaneously withthe application of the brake band to the fly wheel.

5. In a dough rolling machine having a drum or fly wheel, thecombination of a brake band adapted to frictionally engage saidflywheel, a lever to'which said brake 5 band is attached, a brakereleasing arm afliXed to said brake applying lever, a latch memberengagingthe brake release arm, a hinged apron, and an electric switchpositioned to be actuated by the latch member and arranged to turn 0Ethe source of current supply that operates the machine simultaneouslywith the application of the brake band to the fly wheel.

6. In a safety device of the type described, the combination with adough rolling inachine having a iy wheel, of a brake band adapted tofrictionally engage said fly wheel, an adjustable weighted lever towhich said brake band is attached, a brake relim lease lever affixed anddisposed at an angle to said brake applying lever, a latch memberengaging the brake release lever, ya swingable apron arranged to applythe brake band, and an electric switch positioned to be actuated by theaforesaid member andv` arranged to turn off the source of current supplythat operates the machine simultaneously with the application of thebrake band to the fly wheel. f

7. In a safety device of the type described, I the combination with adough rolling ma-y chine having a fly wheel, of a brake band adapted tofrictionally engage said fly wheel, an adjustable Weightedl lever towhich said brake band is attached, a brake release lever aiiixed to saidbrake applying lever, a spring controlled latch member engaging thebrake release lever, and a manually operable swingable apron arrangedtoapply the brake band, and an electric switch positioned to be actuatedby the aforesaid member and arranged to turn off the source of currentsupply that operates the machine simultaneously with the application ofthe brake band to the fly wheel.

8. In a safety device of the Vtype described, the combination with adough rolling machine having a fly wheel, of a brake band adapted tofrictionally engage said fly wheel, an adjustable weighted lever towhich Y said brake band is attached, brake releasing arm aflix'ed to-said brake applying lever, a

n latch member engaging the brake release arm, and a swingable apronarranged to actuate the latch member and a push button electric switchpositioned to be actuated by the aforesaid member and arranged to turnoff the source of current supply that'operates the machinesimultaneously with thev application of the brake' band to the flywheel. v

9. In a safety device for a dough rolling machine, the combination of aswinging def pending apron, a U-bar latch arranged to be actuated by theapron, a push button electric switch adapted to be simultaneouslyactuated by the U-bar latch, a brake release `lever adapted to bereleased by the actuation of the latch member, and a. brakevfor theoperating mechanism of the'dough rolling machine arranged to be appliedon release of the brake releasing lever. n

10. In a safety device for a dough rolling machine, the combination of'a' manuallyA operable swinging depending apron, a latch arranged to beactuated by the apron, a push button electric switch adapted to beactuated by the latch, a latch releasing device arc ranged to besimultaneously actuated by the apron, a brake release leverl adaptedtobe v released by the actuation of the latch member, a brake for theoperating mechanism of the dough rolling machine arranged to be appliedon release of the .brake releasing

